Thermophysical Characterisation of the Diacetone Alcohol-Water Binary System

Authors

  • Likhith M R Department of Chemistry, University College of Science, Tumkur University, Tumkur-572103, India
  • Vani P S Department of Chemistry, University College of Science, Tumkur University, Tumkur-572103, India
  • Ramesh T N Department of Chemistry, University College of Science, Tumkur University, Tumkur-572103, India

DOI:

https://doi.org/10.33736/jaspe.10743.2026

Abstract

Understanding of thermodynamic variables in any binary liquid system is crucial for the development of industrial products. Among the various thermodynamic parameters, density (ρ), viscosity (η), surface tension (γ), apparent molar volume (фv) and partial molar volume (V̄m) have been extensively used to characterize the binary liquid systems. In this article, we have investigated the density (ρ), viscosity (η), surface tension (γ), apparent molar volume (фv) and partial molar volume (V̄m) of binary mixtures of diacetone alcohol (DAA)-water system across all mole fractions at 301 K. Viscosity increases as the mole fraction of diacetone alcohol increases up to 0.6 and then decreases drastically. Initially, positive deviations have been observed for the viscosity of the liquid binary mixtures, while it changes to negative at higher DAA concentrations. The increase in surface tension at higher DAA concentrations in the binary liquid mixture indicates stronger intermolecular forces, leading to an increase in the resistance to surface area expansion at the interface. Volume excess properties were analyzed to explore molecular interactions between the components. The excess volume (VE) and volume changes (Vm) indicate the volume contraction at higher mole fractions of DAA due to stronger intermolecular interactions between diacetone alcohol and water. The structural and thermodynamic data of the DAA-water system can contribute to the advancement of process and industrial product development techniques.

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Published

2026-04-30

How to Cite

M R, L. ., Vani P S, & Ramesh T N. (2026). Thermophysical Characterisation of the Diacetone Alcohol-Water Binary System. Journal of Applied Science &Amp; Process Engineering, 13(1), 46–57. https://doi.org/10.33736/jaspe.10743.2026

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Vol. 13 No. 1 (2026): Journal of Applied Science & Process Engineering, Volume 13, Number 1, 2026

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